diff --git a/requirements-dev.txt b/requirements-dev.txt
index d3923f6..9b41322 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,6 +1,6 @@
 Click==7.0
 geomet==0.2.0.post2
-pyyaml==5.1
+pyyaml==5.4
 requests==2.21.0
 schema==0.6.8
 Shapely==1.6.4.post2
diff --git a/requirements.txt b/requirements.txt
index 2cb4938..fd6d7e5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 Click==7.0
 geomet==0.2.0.post2
-pyyaml==5.1
+pyyaml==5.4
 requests==2.21.0
 schema==0.6.8